Column Adsorption Studies for the Removal of Cr(VI) Ions by Ethylamine Modified Chitosan Carbonized Rice Husk Composite Beads with Modelling and Optimization

Table 2

Experimental design matrix and responses for the adsorption of Cr(VI) using EAM-CCRCBs.

Runs	𝐴 (g)	𝐵	𝐶 (mg/L)	Actual	Predicted	Actual	Predicted
				𝑌1	𝑌1	𝑌2 mg/g	𝑌2 mg/g
1	0.09	3	200	87.1	88.40	48.40	50.78
2	0.16	3	200	99.8	104.01	31.20	30.89
3	0.09	5	200	75.8	73.84	42.13	41.96
4	0.16	5	200	99.4	97.10	31.09	29.01
5	0.09	3	400	69.3	71.91	77.00	78.51
6	0.16	3	400	93.1	95.38	58.20	57.78
7	0.09	5	400	59.1	55.20	65.70	65.45
8	0.16	5	400	87.3	86.31	54.60	51.66
9	0.05	4	300	50.5	51.63	75.80	73.77
10	0.2	4	300	99.8	98.36	37.50	40.10
11	0.13	2	300	99.1	94.06	57.12	55.26
12	0.13	6	300	65.7	70.43	37.90	40.33
13	0.13	4	100	99.2	98.73	19.10	18.90
14	0.13	4	500	71.3	71.46	68.50	69.27
15	0.13	4	300	93.8	93.75	54.10	54.19
16	0.13	4	300	93.8	93.75	54.10	54.19
17	0.13	4	300	93.8	93.75	54.10	54.19
18	0.13	4	300	93.8	93.75	54.10	54.19
19	0.13	4	300	93.8	93.75	54.10	54.19
20	0.13	4	300	93.8	93.75	54.10	54.19